Tourist&#39;s glasses.



J. M. FABHRMANN.

TOURISTS GLASSES. APPLICATION FILED IEB.27,1908.

Patented Feb. 2, 1909.

mnntoz JOHN M. FAEHRMANN, or HOUSTON, TEXAS.

TOURISTS GLASSES.

Specification of Letters Patent.

Patented Feb. 2, 1909.

Application filed. February 27, 1908. Serial No. 418,037.

. drawings;

This invention relates to improvements in tourists glasses, and is an improvement upon my Patent No. 877,313, granted January 21st, 1908, in respect to certain details of construction, all of which will be fully described and claimed hereinafter.

In the accompanying drawings, Figure 1 is a perspective view of an instrument embodying my invention, the several parts being shown in operative position. Fig. 2, is an edge elevation partially in section, to show the mechanism for adjusting one of the lenses. Fig. 3, is a transverse sectional view on the line 33 of 2. Fig. 4, 'is a horizontal sectional view through the lensad usting mechanism. Fig. 5, is a sectional view showing a modification of the means for permitting the adjustment of one of the lenses. Fig. 6, is an end perspective of the adjustable member of Fig. 5. x

This invention is especially intended for the use of tourists, hunters, ranchmen, botanists, mineralogists, and analogous purposes.

The instrument comprises a body portion 1 which is provided at one side with a com pass 2, and may be provided at its opposite side with any desired instrument, such, for instance, as a mirror, as fully described in my said patent. Projecting from one edge of the body 1 is an arm 3, and hinged to the opposite edge of the body is a folding lens 4.

'1 his lens 4 is adapted to be folded inward on the compass, as shown in dotted lines, Fig. 2, and adapted to be turned in a vertical position, as shown in Figs. 1 and 2. When turned upward it is prevented from passing beyond the vertical position by means of a shoulder or extension 5 formed on the body 1, which enables the lens to be accurately placed at right angles to the body portion 1.

An adjustable member 6 slides within the hollow arm 3, and carries at its outer end, an inwardly-folding lens 7. Ihis folding lens is supported in its unfolded position parallel with the lens 4 by means of a suitable spring member. As here shown this spring'member consists of a band 8 which surrounds the frame of the lens and is soldered thereto, and is'provided with projecting spring members 9. 'l hese spring site sides of the lug 10 to which the folding lens ,7 is hinged, and these extensions 9 are provided with inwardly-extending projections 11 adapted to register with and enter the recesses 12 of the lug 10, and thus support the with the lens 4. Attention is also directed to the fact that the lens 7 is hinged at the point 13 to the outer end of the lug 10 for the purpose of alining the center of the lens 7 with the center of the lens 4.

The means preferred for adjusting the member 6 consists of a rack and pinion, and for this purpose the inner end of the member 6 is hollow, as shown in Figs. 3 and 4, and carries at its inner side a rack 14 with which the pinion 15 meshes. For the purpose of holding the rack yieldingly incontact with the pinion 15 a spring 16 is located beneath it,

and this spring may be formed as a part of the member 6, or separate therefrom, as desired. This yielding action insures engagement with the pinion, and also a free and easy movement in the adjustment of the member 6. As here shown, the outer end of the arm 3 is provided with slots 17 at opposite sides thereof, and the axle 18 of the pinion passes into these slots. A ring 19 is placed around the end of the hollow arm 3, and its inner edge engages the axle 18 of the pinion, and thus serves to form and regulate the size of the bearing of the axle, and to hold it in the proper position. The ring 19 may be secured in any suitable manner, and as here shown a screw 20 passes through the ring and engages the arm 3. This arrangement permits the ready and easy assembling of the parts, and also the ready and easy disassembling of the parts. Each end of the axle 18 is provided with an adjusting wheel 21 whereby it may be operated by either the right or the left hand of the user. As here shown, in Fig. 2, the inner-end of the member 6 is cutout, asshown at 22, to permit the member to slide past the axle 18, and this also serves toprevent the member 6 from turning in the hollow arm 3, and holds the lens 7 in alinement with the lens 4.

A suitable member 23 is hinged to the ring 19;, and this member acts as a handle and preferably carries at its outer end a lens 24 that can be used simply as a lens; or can members 9 extend at oppofolding lens 7 in a position parallel I swing upwardly as shown in Fig. 2 against the mirror whereby the same is converted into a magnifying mirror to enable a person to critically examine the eye or other portions of the body visible to him only by means of a mirror, and to be folded inward to make the instrument compact. W hen the lenses are folded inward the instrument is adapted to be conveniently placed in a suitable case.

If desired, for the purpose of cheapness, the member 6 may be provided with a suitable spring device 25 having portions 26 ex tending through the slots 27 of the arm 3, and adapted to frictionally engage therewith. In this instance a ring 1.9 is placed around the end of the arm 3 and will serve to limit the outward movement of the member 6, and to also strengthen its slotted portion. In this arrangement, the member 6 is moved back and forth by a pulling and pushing movement, as will be readily understood.

An instrument of the character herein shown and described combines in a single device a plurality of instruments which are the necessary equipment of persons of the char acter herein referred to, and will therefore be found useful to them. The instrument is also capable of use. by other persons, and it combines in a single device several instruments. The compass will indicate to the user the direction he is looking when the lenses 4 and 7 are being used as a distance glass.

It will be readily understood that the essential reason for providing the lug 10 is to bring the center of the small lens in a line with the center of the large lens, and that this may be accomplished in ways differing specifically from that here shown.

Having thus described my invention, what 1 claim and desire to secure by Letters Patent, is

1. An instrument of the character described, comprising a body portion, an arm proi ecting from one edge thereof, an inwardlyfolding lens projecting from the opposite edge thereof, an inwardly-folding lens projecting from the said arm and adapted to co operate with the first-mentioned lens, the last-mentioned lens having a band surrounding it, the band provided with projecting spring members, the spring members and the arm adapted to interlock when the lens is extended, for the purpose described.

2. An instrument of the character described, comprisirg a body portion, a hollow arm projecting from one edge thereof, an inwardly-folding lens carried by the opposite edge of the body portion, a longitudinally movable lens-carryin g member within the hollow arm, the lens-carryirg member having a longitudinally-extending toothed rack, the end of the hollow arm havinglongitudinal slots adapted to receive a pinion axle, a pinion meshing with the said rack and having it s axle within the said slots and carrying a suitable adjusting wheel, and a ring surrounding the end of the hollow arm with its inner edge in engagement with the pinion axle.

3. An instrument of the character described, comprising a body portion, a hollow arm projecting from one edge thereof, an inwardly-folding lens carried by the opposite edge of the body portion, a longitiulinallymovable lensearr ing member within the hollow arm, the lens-carrying member having a lon itudinally-extending toothed rack, the end of the hollow arm having longitudinal slots adapted to receive a pinion axle, a pinion meshing with the said rack and having its axle within the said slots and carrying a suitable adjusting means, a ring surrounding the end of the hollow arm with its inner edge in engagement with the pinion axle, a lens pivotally carried by the outer end of the arm, and spring members carried by the last mentioned lens and adapted to interlock with the arm when the lens is extended.

4-. An instrument of the character described, comprising a body portion, a hollow arm projecting from one edge thereof, an inwardly folding lens carried by the opposite end of the body portion, a longitudinally movable lens-carrying member within the hollow arm, the lens carrying member having a longitudinally extendirg tooth rack, a spring normally pressing the rack inwardly, the end of the hollow arm having longitudinal slots, an axle extending through said slots, a pinion carried by the axle and meshing with the said rack and having its axle within the said slots and carrying a suitable adjustir g means, a ring surroumling the end of the hollow arm with its inner edge in engagement with the pinion axle, and a sprii'ig member surrounding the last mentioned lens and adapted to interlock with the arm when the lens is extended.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN M. FAEHRMANN. Witnesses JOHN L. FLETCHER, CHAS. R. WRIGHT, Jr. 

